SSEST: A new approach to higher accuracy cylindricity measuring instrument

• Published in: International journal of machine tools & manufacture Vol. 46; no. 14; pp. 1869 - 1878
• Main Authors: Zhao, W.Q., Xue, Z., Tan, J.B., Wang, Z.B.
• Format: Journal Article
• Language: English
• Published: Oxford Elsevier Ltd 01.11.2006; Elsevier
• Subjects: Applied sciences; Cylindricity error separation; Cylindricity measuring instrument; Exact sciences and technology; Industrial metrology. Testing; Mechanical engineering. Machine design; Nanometer precision measurement; Roundness; Cylindricity measuring instrument; Roundness; Cylindricity error separation; Nanometer precision measurement; Measurement; Precision engineering; High precision; Experimental study; Modeling; Nanometer scale; Separation method; Machine design; Instrument error; Cylindricity; Profilometry; Measurement error
• ISSN: 0890-6955; 1879-2170
• DOI: 10.1016/j.ijmachtools.2005.11.006

The spatial rotation error of a cylindricity measuring instrument (CMI) spindle is one of the biggest obstacles to further improvement of CMI accuracy, and in order to reduce the effect of the spatial rotation error on measurement results, a new single-step spatial rotation error separation technique (SSEST) is proposed and a new spatial rotation error separation system is designed to separate the spatial rotation error of CMI section by section. SSEST proposed can be used to remove the spatial rotation error of an instrument spindle from the measurement results by first measuring the circular profile of a workpiece at i sections and rotating the workpiece through a small angle, then measuring the circular profile of the workpiece after rotation, and finally analyzing and processing the circular profiles. The spatial rotation error separation system designed integrates the functions and structures of circular profile error separation system and CMI spindle rotation system to form a new ultraprecision CMI rotation reference for autonomous separation of spatial rotation errors. Theoretical analyses and numerical experimental results indicate that SSEST can accurately remove the spatial spindle rotation error of CMI from the measured workpiece result in the range of 1–100 upr, and improves the CMI accuracy, and the error separation system based on SSEST simplifies the separation process and the separation system.